A son tries to peek at his mother while she's taking a shower. His mother, who's been sexless lately, masturbates in the shower. Her moans can be heard by her son through the door. The son says, "Mom, how about we shower together for a change?" His mother replies, "Oh, sure..." The son enters without hesitation, and his mother offers to wash his back! The son can't hide his erection, and his mother notices.